Files
Anthropic-Cybersecurity-Skills/skills/performing-web-application-firewall-bypass/references/api-reference.md
T
mukul975 27c6414ca5 Add folder anatomy (scripts/agent.py + references/api-reference.md) for 648 cybersecurity skills
Complete skill folder anatomy across all cybersecurity skills:
- scripts/agent.py: 80-150 line Python agents using real libraries (impacket,
  boto3, azure-mgmt-*, kubernetes, pefile, yara, scapy, shodan, stix2, etc.)
- references/api-reference.md: real API documentation with method signatures
- LICENSE: MIT license for all skill folders
2026-03-10 21:02:12 +01:00

54 lines
1.7 KiB
Markdown

# API Reference: WAF Bypass Testing
## Encoding Bypass Techniques
| Technique | Example | Description |
|-----------|---------|-------------|
| URL Encoding | `%3Cscript%3E` | Single URL encode |
| Double Encoding | `%253Cscript%253E` | Double URL encode |
| Unicode/Fullwidth | `\uff1cscript\uff1e` | Unicode replacement |
| HTML Entities | `<script>` | Hex HTML entities |
| Null Byte | `%00` insertion | Terminate string parsing |
| Tab/Newline | `scr\tipt` | Whitespace insertion |
## SQLi WAF Bypass Techniques
| Technique | Payload Pattern |
|-----------|----------------|
| Inline Comment | `1'/**/OR/**/1=1--` |
| Version Comment | `1'/*!50000OR*/1=1--` |
| Case Variation | `1' oR 1=1--` |
| Hex Encoding | `0x313d31` |
| Buffer Overflow | Long padding before payload |
| Content-Type Switch | Send as `application/json` |
## HTTP Method Bypass
| Method | WAF Behavior |
|--------|-------------|
| GET/POST | Usually inspected |
| PUT/PATCH/DELETE | Often not inspected |
| OPTIONS | Typically bypasses rules |
## WAF Detection Indicators
| Response | Meaning |
|----------|---------|
| 403 Forbidden | Request blocked by WAF |
| 406 Not Acceptable | Content rejected |
| 429 Too Many Requests | Rate limited |
| Custom error page | WAF vendor-specific block |
## Python Libraries
| Library | Version | Purpose |
|---------|---------|---------|
| `requests` | >=2.28 | HTTP request sending |
| `urllib.parse` | stdlib | URL encoding/double encoding |
## References
- OWASP WAF Bypass: https://owasp.org/www-community/attacks/WAF_Bypass
- PortSwigger WAF Bypass: https://portswigger.net/web-security/essential-skills/obfuscating-attacks-using-encodings
- PayloadsAllTheThings WAF: https://github.com/swisskyrepo/PayloadsAllTheThings/tree/master/WAF%20Bypass